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Morpho-agronomic traits and balance of sink and source of
rice planted on upland rainfed

1,2
1,2
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C N Ichsan , Bakhtiar , Sabaruddin , and Efendi 1,2
1 Graduate program (Agricultural Sciences) Universitas Syiah Kuala, Jalan Tgk. Chik
Pante Kulu No. 5 Komplek Universitas, Kopelma Darussalam, Kec. Syiah Kuala,
Kota Banda Aceh 23111, Aceh, Indonesia
2 Department of Agrotechnology, Faculty of Agriculture, Universitas Syiah Kuala,
Jalan Tgk. Hasan Krueng Kalee No. 3, Kopelma Darussalam, Kec. Syiah Kuala, Kota
Banda Aceh 23111, Aceh, Indonesia

E-mail: cnichsan64@gmail.com

Abstract. Rice morpho-agronomic traits determine the yield at different planting season due to
the characters that closely related to genetic characteristics and environmental factors. This
study aim to observe morpho –agronomic traits of three varieties, namely Situ Patenggang (as
the check variety that can be planted in rice field and upland rainfed), Sipulo and Sanbei (both
as the test varieties). The varieties planted in upland rainfed in order to observe the morpho-
agronomic traits occurs, as the rice planted in rainfed might be able to be planted elsewhere, due
to its water stress tolerance. The result of the study showed that the check variety have morpho-
agronomic traits that shows a balanced sink and source, while the two test varieties, Sipulo and
Sanbei have a larger but imbalance source and sink capacity. The imbalance of source and sink
was caused by the large amount of the last panicles that appeared from tertiary or quaternary
tiller, in which increased the percentage of unfilled grains that later caused a low percentage of
filled grain. However, the potential yield remains high compared to the check variety. Therefore,
from the observation, it is clear that the morpho-agronomic traits of rice can be determinants in
determining rice yield.

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